Search Engine Optimization(seo and sem)

Whether Baidu or Google, as long as the search engine will be in accordance with its own algorithms and rules change over time, the following search engines included with the updated reference only and do, or because of the site in order to make content-based!

google included time – the first 4 days after the update Update is updated once every seven days (top-impact) Big Update is updated monthly (top-impact) PR value End Update 3 months update time (updated September 20 and so on) because there are different server to update the total time for the week there are two kinds of reptiles GOOGLE One is included reptiles, reptiles are specifically included in this site useful.

There is a GOOGLE Google researchers have discovered a very simple way is to look GOOGLE several mirror sites are the same, because inGOOGLE updateDuring his stay, as always www2.google.com or www3.google.com updated test site, during which the latter two sites the number of pages in the index and the main site will be different. Example, as we move from www.google.com, www2.google.com, www3.google.com there is a kind of situation: three site search with a keyword, the number of results obtained are not the same, which showsGOOGLEIsUpdate.

GOOGLESuch large-scale renovation in foreign countries is known as GOOGLE DANCE (dog dancing), there is a special help us to check whether he is dancing site http://www.google-dance-tool.com This site provides a
Tools, through this tool, we only need to enter a keyword and then click a button, you can see the three mirror sites GOOGLE search results, it is to facilitate our comparison. In the 2009 National Day holiday period, Google update should give me the exception of the play, looking forward to the arrival of Google updates.

Baidu updated – as a Webmaster, from theSearch EngineWeb site traffic flow is an important part of one of the search engine updates so owners of particular concern, always hope that their sites included in Baidu, more and more every day site, terrible trouble, we grasp what Baidu included the approximate time do not update the site every day. Baidu contains a large updated monthly, 11 and 26, especially 26 to update the sharpest, K stations are also the largest. Small Update Time: every Thursday. Updated all the time 4:00. General 4:00 update, the impact of site traffic are Mosha was only at the noon time, Baidu keyword search on the site re-adjustments, would there be traffic on the major changes have increased the natural flow naturally down.

Another is to increase the ranking of the reptile, this reptile is a comprehensive response to connect with the calculation of the reptile, and the stability of the rank and position is very important. Therefore, some new stations, when included in the rankings just not very good is bad, this is because the first one to climb
Insects reasons, but the site lost Do not worry, the real point to be ranked the second after three months, when the reptiles came to take effect.

Yahoo is updated daily time is 6:00-7:00 am, a general search your web site contains the previous day was found to reduce later, in over 30 minutes will find that included increased. About one to two months or so is updated on a relatively large dynamic and static. Yahoo included: general time is 1 month or so, but if you stand a good framework, the code in line with w3c and original content, then certainly within 10 days will be included, with google

Actually, the most important thing is to improve the quality of the site can not be a site design, or the content, or the page code, need to be well optimized. The final comments from the site’s visitors, the content is not to meet the needs of users.